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Metal three groove V belt pulley with quick detachable bushed bore finish

Tb Wood'S

Tb Wood'S 343B Quick Detachable Bushed Bore 3 Groove V-Belt

SKU CH-N34G-JGF1D

Three-groove V-belt sheave with quick-detachable bushed bore fits 4L, 5L, A, AX, B and BX belts

  • TypeSheaves & Pulleys
  • Quick-detachable bushing enables fast belt changes
  • Three-groove design handles multiple belt sizes
  • Fits 4L, 5L, A, AX, B, BX belts
  • 4 in pitch diameter for B and BX belts
  • Precision-machined sheave ensures smooth power transmission

TB Wood's 343B Quick Detachable Sheave

The TB Wood's 343B is a three-groove V-belt sheave designed for power transmission drives that use A, AX, B, BX, 4L or 5L belt sections. It mounts on a Quick Detachable SH bushing to provide a secure, concentric fit on shafts from 1/2 in to 1-5/8 in.

Pitch diameter limits for each belt section

The sheave offers a 3 in pitch diameter for A, AX and 4L belts and a 3.4 in pitch diameter for B, BX and 5L belts. Sections 3L, 3V, 3VX, 5V, 5VX, C and CX are not supported, so the drive ratio is fixed to the two available diameters.

Quick Detachable bushing installation

The SH bushing slides into the tapered bore and locks with cap screws, allowing the sheave to be fitted or removed without special tools. Correct torque on the screws is essential; under-tightening permits slip while over-tightening can crack the bushing flange.

Highlights

  • Quick-detachable bushing enables fast belt changes
  • Three-groove design handles multiple belt sizes
  • Fits 4L, 5L, A, AX, B, BX belts
  • 4 in pitch diameter for B and BX belts
  • Precision-machined sheave ensures smooth power transmission

Specifications

TypeSheaves & Pulleys

Questions about this item

Which bore size should I select for the 343B pulley?

The 343B uses a Quick Detachable SH bushing that accepts a bore range of 1/2 in to 1-5/8 in, so choose the bushing that matches your shaft diameter.

What does the 3.4 in pitch diameter mean for belt speed?

A 3.4 in pitch diameter on the B and BX belts gives a larger effective rolling radius than the 3 in A/AX setting, so the driven shaft turns slower for the same motor speed.

Which belt cross-sections does the SH bushing interface support?

The SH bushing fits this pulley for 4L, 5L, A, AX, B and BX trade sizes; C, CX, 3V, 3VX, 5V and 5VX are not compatible.

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